CVE-2025-40571: Siemens Mendix Oidc SSO Mendix 10.12 Compatible

Low severity, CVSS 2.2. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability has been identified in Mendix OIDC SSO (Mendix 10.12 compatible) (All versions < V4.0.1), Mendix OIDC SSO (Mendix 9 compatible) (All versions < V3.3.1), Mendix OIDC SSO V4.2 (Mendix 10 compatible) (All versions < V4.2.1), Mendix OIDC SSO V4.3 (Mendix 10 compatible) (All versions). The Mendix OIDC SSO module grants read and write access to all tokens exclusively to the Administrator role and could result in privilege misuse by an adversary modifying the module during Mendix development.

Affected products

• Siemens Mendix Oidc SSO Mendix 10.12 Compatible: before V4.0.1 (fixed in V4.0.1)
• Siemens Mendix Oidc SSO Mendix 9 Compatible: before V3.3.1 (fixed in V3.3.1)
• Siemens Mendix Oidc SSO v4.2 Mendix 10 Compatible: before V4.2.1 (fixed in V4.2.1)
• Siemens Mendix Oidc SSO v4.3 Mendix 10 Compatible: any version

Published 2025-05-13. Last modified 2026-06-17.